... Diacetyl and a- acetolactate overproduction by Lactococcus lactis subsp lactis biovar diacetylactis mutants that are deficient in a- acetolatate decarboxylase and have low lactate dehydrogenase activity ... 253–267 Rondags, E., Halliday, E & Marc, I (1998) Diacetyl production mechanism by a strain of Lactococcus lactis spp lactis bv diacetylactis Study of a- acetolactic acid extracellular accumulation ... indicates that, although PFL activity was the principle source of acetate, either acetate from an alternative catabolism was also being produced or formate was being degraded As L lactis lacks...